My sister has two skirts. One is yellow，and____________ is black.

How far is the Palace Museum from here–It’s about four ______ drive. You can take a taxi there or you can take a walk.

The little girl was the only one who ____ escaped being killed in the traffic accident[ ]

No sooner ___ down on bed ___ the telephone rang.

. —How’s your tour around the North Lake? Is it beautiful?—It __________ be, but it is now heavily polluted.